Dickon's curly mouth spread in a cheerful grin.

　　狄肯嘴咧開彎彎的嘴角，露出愉快的笑容。

　　The captain's cheerful laugh dispelled our fears.

　　船長(zhǎng)愉快的笑聲消除了我們的恐懼。

　　People with type B blood are cheerful and outgoing.

　　B型血的人開朗外向。